Plug-in fluorescent lamp



FIG. 1 is a top, rear perspective view of a plug-in fluorescent lamp showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevation view thereof; and,

FIG. 4 is a left side elevation view thereof, the right side being a mirror image. 

The ornamental design for a plug-in fluorescent lamp, as shown and described. 